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numerical aperture
earth.sc., industr., construct.	numerische Apertur
microsc.	Numerische Apertur
opt.	numerische Apertur (the product of the refractive index of the medium between the object and the lens and the sine of half the angle subtended by the lens diameter at the object); NA m (the product of the refractive index of the medium between the object and the lens and the sine of half the angle subtended by the lens diameter at the object)
English thesaurus
Numerical Aperture
abbr., scottish	NA

numerical aperture : 7 phrases in 4 subjects

Antennas and waveguides	2
Electronics	1
Microelectronics	1
Optics branch of physics	3